Azithromycin CP Impurity R CAS 161193-44-8
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 161193-44-8 |
| Molecular Formula | C37H66N2O12 |
| Molecular Weight | 730.93 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Azithromycin CP Impurity R (CAS 161193-44-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C37H66N2O12. Molecular weight: 730.93 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C37H66N2O12 |
| Molecular Weight | 730.93 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
| Nitrogen Atoms | 2 |
Related Azithromycin Standards
- Azithromycin CP Impurity Q (CAS 99290-97-8)
- Azithromycin Impurity 23 (CAS CATO-C4X-100323)
- Azithromycin Impurity 50 (CAS CATO-C4X-100350)
- Azithromycin impurity 53 (CAS 152727-04-3)
- Azithromycin EP Impurity B (CAS 307974-61-4)
- Azithromycin EP Impurity A (CAS 76801-85-9)
- Azithromycin EP Impurity C (CAS 620169-47-3)
- Azithromycin EP Impurity I (CAS 172617-84-4)
Recommended Standards
- Erythromycin impurity 58 (CAS 145259-56-9)
- Erythromycin A 9,11-Iminoether (CAS CATO-C4X-100131)
- Meropenem Impurity 32 (CAS CATO-C4X-130932)
- Peridine Impurity 17 (CAS 57611-57-1)
- Tobramycin Impurity 20 (CAS CATO-C4X-220020)
- 6-(3-(Cyclopropylmethoxy)-4-methoxyphenyl)-3-(2,5-dimethoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine (CAS 1172617-14-9)
- 4-Oxo-4H-pyrido[1,2-a]pyrimidine-2-carboxylic acid hydrochloride (CAS 2499661-06-0)
- (2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)(1-methyl-1H-pyrrol-2-yl)methanol (CAS 1443306-93-1)
- 6-(Methylamino)pyridazine-3-carboxylic Acid (CAS 365413-15-6)
- Des-Gln24-Tirzepatide (CAS CATO-CPTD788949)
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